Referencing Another TypeScript Project?

I am looking to create a TypeScript Class Library that I can use to reference in my TypeScript HTML Application (or NodeJS Application through the use of NodeJS Tools). What is the best way of going about this?

In the HTML Application, add a <reference> tag to the generated .d.ts file.

This will only work for HTML Applications (i.e. code rendered by a browser), and you will have to take responsibility for loading the library script yourself (via a <script> tag). For Node JS applications you will have to look at creating a private NPM
or some mechanism for copying the library into the node_modules folder.